5/4 = x/11

x/11 = 5/4

x/11 *11 = 5/4 *11

x = 5*11/4

x = 55/4 = 13.75

                    (y-1)/4 = y/11  

11(y-1) = 4y

4y = 11(y-1)

4y = 11y -11

4y -11y = 11y -11 -11y

-7x = -11

x = -11/-7

x = 11/7